/**
 * Created by qunxing.du on 2016/7/26.
 * Copyright 2016 汉威.智慧环保事业部 Limited.
 * All rights reserved.
 */
package com.hw.one.collect.memento;

import java.io.Serializable;

/**
 *  备忘录，子类须继承此类扩展备忘录模型
 */
public abstract class Memento implements Serializable {

}
